This paper reports the design and development of rectangular microstrip antenna comprising a novel slot for enhancing the impedance bandwidth and gain. By incorporating a slot of optimum geometry at suitable location on the radiating patch, the antenna provides 78.08% (3.39 - 7.73 GHz) of impedance bandwidth and 3dB of gain without changing the nature of broadside radiation characteristics when compared to conventional rectangular microstrip antenna. The proposed antenna may find applications in mobile WiMax, IEEE802.11a, HIPERLAN/2, cordless phones, fixed wireless etc. Design concept of antennas is given, and experimental results are discussed.
2. Kumar, G. and K. C. Gupta, "Broad-band microstrip antennas using additional resonators gap-coupled to the radiating edges," IEEE Trans. Antennas and Propagation, Vol. 32, 1375-1379, 1984.
doi:10.1109/TAP.1984.1143264
3. Jazi, M. N., Z. H. Firouzeh, H. M. Sadeghi, and G. Askari, "Design and implementation of aperture coupled microstrip IFF antenna," PIERS Online, Vol. 4, No. 1, 1-5, 2008.
4. Nishiyama, E. and M. Aikawa, "Wide-band and high gain microstrip antenna with thick parasitic patch substrate," IEEE Antennas and Propagation Society International Symposium, Vol. 1, 273-276, 2004.
5. Levine, E., G. Malamud, S. Shtrikman, and D. Treves, "A study of microstrip array antennas with the feed network," IEEE Trans. Antennas and Propagation, Vol. 37, 426-434, 1989.
doi:10.1109/8.24162
6. Bahl, I. J. and P. Bhartia, Microstrip Antennas, Artech House, New Delhi, 1980.
7. Kumar, G. and K. P. Ray, Broadband Microstrip Antennas, Artech House, Norwood, MA, 2003.
8. Maci, S. and G. B. Gentili, "Dual-frequency patch antennas," IEEE Trans. Antennas and Propagation, Vol. 39, 13-19, 1997.
9. Pushpanjali, G. M., R. B. Konda, S. N. Mulgi, S. K. Satnoor, and P. V. Hunagund, "Equilateral triangular microstrip array antenna for broadband operation," Microwave and Optical Technology Letters, Vol. 50, No. 7, 1834-1837, 2008.
doi:10.1002/mop.23503
10. Rafi, G. Z. and L. Shafai, "Wideband V-slotted diamond-shaped microstrip patch antenna," Electronics Letters, Vol. 40, No. 19, 1166-1167, 2004.
doi:10.1049/el:20046186
11. Sadat, S., M. Houshmand, and M. Roshandel, "Design of a microstrip square-ring slot antenna filled by an H-shape slot for UWB applications," Progress In Electromagnetic Research, Vol. 70, 191-198, 2007.
doi:10.2528/PIER07012002
12. Balanis, C. A., Antenna Theory Analysis and Design, John Wiley and Sons, New York, 1982.
13. Nishiyama, E., M. Aikawa, and S. Egashira, "FDTD analysis of stacked microstrip antenna with high gain," Progress In Electromagnetic Research, Vol. 33, 29-43, 2001.
doi:10.2528/PIER00091501
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